LOHER VARIO

The LOHER VARIO Ex px (e) series has a welded steel enclosure for the highest degree of variability and versatility. Flange rings at the ends of the enclosure increase the torsional stiffness and ensure a vibration-proof mechanical design. The steel version allows various bearing concepts, dimensions can be adapted and a wide range of instruments can be mounted.
The surface cooling with flat ribs combined with a defined inner cooling circuit with internal shaft-mounted fan ensure optimum motor utilization. The copper bar rotors used as standard allow the starting and operating parameters to be optimized for each and every application. In conjunction with the Ex p system harmonized for the application, the motors can be used in Zone 1 in the medium power range. Further, the pressurized enclosure permits reliable protection against the ingress of corrosive atmospheres.

Область применения

Used in Ex-Zones 1 and 2 for

Pumps
Compressors
Fans
Branch Oil & Gas

Особенности

Complies with almost all of the user requirements and specifications (no deviation philosophy)
Configuration based on international standards (ATEX, NEPSI, GOST-R, CCOE certified)
High level of acceptance in the various sectors. For instance, Shell and DOW recommend these motors
Complete project documentation guarantees minimum planning costs
High degree of cost effectiveness and low operating costs as a result of the optimum electrical and mechanical values
High degree of variability and versatility using a welded steel enclosure (to adapt the dimensions, mounted components)

Технические данные

Motors:	AH.P / MLFB: 1PS6
Shaft heights:	355, 400, 450, 500, 560
Power range:	80 kW - 2150 kW
Number of poles:	2 - 16 poles, higher pole numbers on request
Voltage range:	3000 V - 11000 V
Rated voltage:	3.3 kV / 4.16 kV / 6 kV / 6.6 kV / 10 kV / 11 kV
Frequency converter:	Line and converter operation
Degree of protection:	IP55, IP56, IP67
Cooling type:	IC 411, IC 416, IC 71W
Type of construction:	IM B3, IM B35, IM V1
Enclosure:	Welded steel
Bearings:	Roller bearings, sleeve bearings
Standards:	IEC, EN, DIN, VDE
Explosion protection:	II2G Ex px (e) II
Type of protection: without explosion protection	N.A.
Noise level:	max. 85 dB(A) (load, 50 Hz), lower noise versions are available

Features

Corrosion protection using special paint finishes according to the manufacturer's standard or customer's specification.
The motors are available as special version for polar regions down to -40 °C or for desert regions up to +60 °C.
Wide range of connection systems for large cable cross-sections, high short-circuit strength or phase-segregated version.
Optimized starting and operating parameters and high efficiency by using copper bar rotors as standard.

Дальнейшая информация

Brochures
Pumps, fans, compressors